Dear customers,
About the change in the name such as "Oki Electric Industry Co. Ltd." and
"OKI" in documents to OKI Semiconductor Co., Ltd.
The semiconductor business of Oki Electric Industry Co., Ltd. was succeeded to OKI
Semiconductor Co., Ltd. on October 1, 2008.
Therefore, please accept that although
the terms and marks of "Oki Electric Industry Co., Ltd.", “Oki Electric”, and "OKI"
remain in the documents, they all have been changed to "OKI Semiconductor Co., Ltd.".
It is a change of the company name, the company trademark, and the logo, etc. , and
NOT a content change in documents.
October 1, 2008
OKI Semiconductor Co., Ltd.
550-1 Higashiasakawa-cho, Hachioji-shi, Tokyo 193-8550, Japan
http://www.okisemi.com/en/
OKI
Semiconductor
MR27V402E
GENERAL DESCRIPTION
FEDR27V402E-02-03
Issue Date: Jan.20, 2003
262,144–Word
×
16–Bit or 524,288–Word
×
8–Bit Production Programmed Read Only Memory (P2ROM)
The MR27V402E is a 4 Mbit Production Programmed Read-Only Memory (P2ROM ) that can be electrically
switched between 262,144-word
×
16-bit and 524,288-word
×
8-bit by the state of the
BYTE
pin. The
MR27V402E supports high speed asynchronous read operation using a single 3.3V power supply.
FEATURES
· 262,144-word
×
16-bit/524,288-word
×
8-bit electrically switchable configuration
· +3.3 V power supply
· Access time
70 nS MAX
· Operating current
30 mA MAX
· Standby current
10 µA MAX
· Input/Output TTL compatible
· Three-state output
· Packages:
40-pin plastic DIP (DIP40-P-600-2.54)
(MR27V402ERP)
40-pin plastic SOP (SOP40-P-525-1.27-K)
(MR27V402EMP)
44-pin plastic TSOP (TSOP(2)44-P-400-0.80-K) (MR27V402ETP)
42-pin plastic SOJ (SOJ42-P-400-1.27)
(MR27V402EJA)
1/12
FEDR27V402E-02-03
OKI
Semiconductor
MR27V402E(P2ROM)
PIN CONFIGURATION (TOP VIEW)
NC
1
NC
1
A17
1
A7
2
A6
3
A5
4
A4
5
A3
6
A2
7
A1
8
A0
9
CE
10
V
SS
11
OE
12
D0
13
D8
14
D1
15
D9
16
D2
17
D10
18
D3
19
D11
20
40
A8
39
A9
38
A10
37
A11
36
A12
35
A13
34
A14
33
A15
32
A16
31
BYTE
30
V
SS
29
D15/A–1
28
D7
27
D14
26
D6
25
D13
24
D5
23
D12
22
D4
21
V
CC
42
NC
41
A8
40
A9
39
A10
38
A11
37
A12
36
A13
35
A14
34
A15
33
A16
32
BYTE
31
V
SS
30
D15/A–1
29
D7
28
D14
27
D6
26
D13
25
D5
24
D12
23
D4
22
V
CC
44
NC
43
NC
42
A8
41
A9
40
A10
39
A11
38
A12
37
A13
36
A14
35
A15
34
A16
33
BYTE
32
V
SS
31
D15/A–1
30
D7
29
D14
28
D6
27
D13
26
D5
25
D12
24
D4
23
V
CC
NC
2
A17
3
A7
4
A6
5
A5
6
A4
7
A3
8
A2
9
A1
10
A0
11
CE
12
V
SS
13
OE
14
D0
15
D8
16
D1
17
D9
18
D2
19
D10
20
D3
21
D11
22
A17
2
A7
3
A6
4
A5
5
A4
6
A3
7
A2
8
A1
9
A0
10
CE
11
VSS
12
OE
13
D0
14
D8
15
D1
16
D9
17
D2
18
D10
19
D3
20
D11
21
40-pin DIP or SOP
Pin name
D15/A–1
A0 to A17
D0 to D14
CE
OE
BYTE
V
CC
V
SS
NC
42-pin SOJ
Functions
Data output / Address input
Address input
Data output
Chip enable
Output enable
Mode switch
Power supply voltage
GND
Non connection
44-pin TSOP(II)
2/12
FEDR27V402E-02-03
OKI
Semiconductor
MR27V402E(P2ROM)
BLOCK DIAGRAM
A–1
× 8/× 16 Switch
CE
CE
OE
OE
BYTE
Column Decoder
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
Row Decoder
Memory Cell Matrix
262,144 × 16-Bit or 524,288 × 8-Bit
Address Buffer
Multiplexer
Output Buffer
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D12
D14
D15
D11
D13
In 8-bit output mode, these pins
are placed in a high-Z state and
pin D15 functions as the A-1
address pin.
FUNCTION TABLE
Mode
Read (16-Bit)
Read (8-Bit)
Output disable
Standby
CE
L
L
L
H
OE
L
L
H
∗
BYTE
H
L
H
L
H
L
3.3 V
D
OUT
V
CC
D0 to D7
D8 to D14
D
OUT
Hi–Z
Hi–Z
Hi–Z
L/H
∗
∗
D15/A–1
∗:
Don’t Care (H or L)
3/12
FEDR27V402E-02-03
OKI
Semiconductor
MR27V402E(P2ROM)
ABSOLUTE MAXIMUM RATINGS
Parameter
Operating temperature under bias
Storage temperature
Input voltage
Output voltage
Power supply voltage
Power dissipation per package
Symbol
Ta
Tstg
V
I
V
O
V
CC
P
D
—
relative to V
SS
Condition
—
Value
0 to 70
–55 to 125
–0.5 to V
CC
+0.5
–0.5 to V
CC
+0.5
–0.5 to 5
1.0
Unit
°C
°C
V
V
V
W
RECOMMENDED OPERATING CONDITIONS
(Ta = 0 to 70°C)
Parameter
V
CC
power supply voltage
Input “H” level
Input “L” level
Symbol
V
CC
V
IH
V
IL
V
CC
= 3.0 to 3.6 V
Condition
Min.
3.0
2.2
–0.5∗∗
Typ.
—
—
—
Max.
3.6
V
CC
+0.5∗
0.6
Unit
V
V
V
Voltage is relative to V
SS
.
∗
: Vcc+1.5 V(Max.) when pulse width of overshoot is less than 10 ns.
∗∗
: -1.5 V(Min.) when pulse width of undershoot is less than 10 ns.
Pin Capacitance
(V
CC
= 3.3 V, Ta = 25°C, f = 1 MHz)
Parameter
Input
BYTE
Output
Symbol
C
IN1
C
IN2
C
OUT
Condition
V
I
= 0 V
V
O
= 0 V
Min.
—
—
—
Typ.
—
—
—
Max.
8 (10)
60
10 (12)
pF
Unit
( ) : DIP only
4/12
